University of Oulu

Nguyen, Hoang; Kinnunen, Päivö; Carvelli, Valter; Illikainen, Mirja (2019) Strain-Hardening Ettringite-based Composite with Polypropylene Fiber Reinforced Ladle Slag: Durability under Combined Chloride and Sulfate Attack. In : Serdar, Marijana; Štirmer, Nina; Provis, John (eds.) Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) : New Generation of Construction Materials, Proceedings pro128-1 (pp. 234-240), Paris; Rilem Publications.

Strain-hardening ettringite-based composite with polypropylene fiber reinforced ladle slag : durability under combined chloride and sulfate attack

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Author: Nguyen, Hoang1; Kinnunen, Päivö1; Carvelli, Valter2;
Organizations: 1Fibre and Particle Engineering Research Unit, University of Oulu, Pentti Kaiteran katu 1, 90014 Oulu, Finland
2Department A.B.C., Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milan, Italy
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.2 MB)
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Language: English
Published: Rilem Publications, 2019
Publish Date: 2020-11-13


Ladle slag, an industrial waste from steel manufacturing processes, is an interesting raw material for sustainable inorganic binders. In earlier work, we have developed an ettringite-based binder (LSG) from the hydration between ladle slag and gypsum. In addition, polypropylene (PP) fiber was employed to attain a strain-hardening cementitious composite from LSG. To investigate the durability of PP fiber reinforced LSG, the composite was exposed to a combined chloride and sulfate environment under freeze-thaw cycling. The compressive and flexural behavior of PP fiber reinforced LSG after up to 180 freeze-thaw cycles was experimentally characterized. The experimental results confirm the durability of LSG under Na₂SO₄-NaCl environment. Furthermore, the PP fibers generally enhance the mechanical properties and durability of the reinforced composite. Since there is a lack of study on the durability of ettringite-based binders from industrial wastes under harsh environments, this experimental study reveals the feasibility of using fiber reinforced ettringite-based composite as an alternative construction material.

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ISBN: 978-2-35158-218-3
ISBN Print: 978-2-35158-217-6
Pages: 234 - 240
Host publication: Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) : New Generation of Construction Materials
Host publication editor: Serdar, Marijana
Štirmer, Nina
Provis, John
Conference: International Conference on Sustainable Materials, Systems and Structures
Type of Publication: A3 Book chapter
Field of Science: 212 Civil and construction engineering
Funding: This work was done under MINSI project (grant number: A70189). The authors appreciate support from SSAB Europe Oy (Finland), Brasilit Saint-Gobain (Brazil), BASF (Germany), and Vanderbilt (USA) for providing the ladle slag, PP fiber, superplasticizer, and dispersing agent, respectively. Hoang Nguyen gratefully acknowledges the financial support from Tauno Tönning Foundation.
Copyright information: © 2019 RILEM.